Name
Abstract | ||
|---|---|---|
We augment the Mel cepstral (MFCC) feature representation with voicing features from an independent front end. The voicing feature front end parameters are optimized for recognition accuracy. The voicing features computed are the normalized autocorrelation peak and a newly proposed entropy of the high-order cepstrum. We explored several alternatives to integrate the voicing features into SRI's DECIPHER system. Promising early results were obtained in a simple system concatenating the voicing features with MFCC features and optimizing the voicing feature window duration. Best results overall came from a more complex system combining a multiframe voicing feature window with the MFCC plus third differential features using linear discriminant analysis and optimizing the number of voicing feature frames. The best integration approach from the single-pass system experiments was implemented in a multi-pass system for large vocabulary testing on the Switchboard database. An average WER reduction of 2% relative was obtained on the NIST Hub-5 dev2001 and eval2002 databases. |
Year | DOI | Venue |
|---|---|---|
2004 | 10.1109/ICASSP.2004.1326137 | ICASSP '04). IEEE International Conference |
Keywords | Field | DocType |
cepstral analysis,correlation methods,entropy,error statistics,feature extraction,optimisation,speech recognition,MFCC,Mel cepstral feature representation,NIST Hub-5 dev2001,SRI DECIPHER system,Switchboard database,WER reduction,eval2002,front end parameter optimization,high-order cepstrum entropy,large vocabulary testing,linear discriminant analysis,multiframe voicing feature window,normalized autocorrelation peak,recognition accuracy,third differential features,voicing features,window duration | Mel-frequency cepstrum,Normalization (statistics),Pattern recognition,Computer science,System testing,Cepstrum,Speech recognition,Feature extraction,NIST,Artificial intelligence,Voice,Linear discriminant analysis | Conference |
Volume | ISSN | ISBN |
1 | 1520-6149 | 0-7803-8484-9 |
Citations | PageRank | References |
16 | 2.41 | 8 |
Authors | ||
5 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Martin Graciarena | 1 | 281 | 24.70 |
| Horacio Franco | 2 | 543 | 72.04 |
| Jing Zheng | 3 | 442 | 43.00 |
| Dimitra Vergyri | 4 | 373 | 36.97 |
| Andreas Stolcke | 5 | 6690 | 712.46 |